820808025

Names of 820808025

• Cardinal: 820808025 can be written as Eight hundred twenty million, eight hundred eight thousand and twenty-five.

Scientific notation

• Scientific notation: 8.20808025 × 10⁸

Factors of 820808025

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 414

Divisors of 820808025

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 15 17 25 29 51 75 79 85 87 145 237 255 281 395 425 435 493 725 843 1185 1275 1343 1405 1479 1975 2175 2291 2465 4029 4215 4777 5925 6715 6873 7025 7395 8149 11455 12325 14331 20145 21075 22199 23885 24447 33575 34365 36975 38947 40745 57275 66597 71655 100725 110995 116841 119425 122235 138533 171825 194735 203725 332985 358275 377383 415599 554975 584205 611175 643771 692665 973675 1132149 1664925 1886915 1931313 2077995 2921025 3218855 3463325 5660745 9434575 9656565 10389975 10944107 16094275 28303725 32832321 48282825 54720535 164161605 273602675 820808025
• Sum of all divisors σ(n): 1510617600
• Sum of proper divisors (its aliquot sum) s(n): 689809575
• 820808025 is a deficient number, because the sum of its proper divisors (689809575) is less than itself. Its deficiency is 130998450

Bases of 820808025

• Binary: 110000111011001000100101011001₂
• Hexadecimal: 0x30EC8959
• Base-36: DKORIX

Squares and roots of 820808025

• 820808025 squared (820808025²) is 673725813904400625
• 820808025 cubed (820808025³) is 552999554702388615815015625
• The square root of 820808025 is 28649.7473810853
• The cube root of 820808025 is 936.2975018131

Scales and comparisons

• 820,808,025 seconds is equal to 26 years, 5 weeks, 1 day, 2 hours, 13 minutes, 45 seconds.
• To count from 1 to 820,808,025 would take you about thirty-nine years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 820808025 cubic inches would be around 78 feet tall.

Recreational maths with 820808025

• 820808025 backwards is 520808028
• The number of decimal digits it has is: 9
• The sum of 820808025's digits is 33
• More coming soon!